Model TT231-0600
Two-Wire RTD Transmitter w/USB
Acromag, Inc. Tel: 248-295-0880
- 7 - http://www.acromag.com
- 7 -
http://www.acromag.com
Sensor Input Connections
Sensor wires are wired directly to transmitter input terminals at the bottom of the
module, or the left side (the spring-loaded DIN clip side), as shown in the
connection drawing below. Observe proper polarity when making input
connections.
Use Insulated or Non-Grounded Sensors Only
- Input is non-isolated. Do not
ground any input leads.
Two-Wire Input Sensors Require Jumper -
For a 2-wire sensor, you must
connect a short copper jumper wire between input terminals 3 and 4 at the
transmitter (see below). Alternately, if you want to compensate for sensor lead
wire resistance, do not include this jumper but add a third copper lead from the
sensor to terminal 4, as shown in the 3-wire connection figure below.
Four-Wire Input Sensors Use 3-Wire Lead Compensation
.
INPUT
TERMINALS
+
H
-
L
INPUT SIDE
OUTPUT SIDE
MODEL TT231-0600
TB1
TB2
BOTTOM VIEW
(INPUT SIDE)
DIN RAIL SPRING CLIP
2
1
4
3
DIN RAIL SPRING CLIP
IN+
IN-
2
1
3
4
(NC)
2-WIRE
3-WIRE
4-WIRE
(2-WIRE ONLY)
ADD JUMPER
PLATINUM RTD OR RESISTANCE
MODEL TT231-0600 INPUT SENSOR WIRING
SHIELDED CABLE
OPT SHIELD GROUND
DO NOT GROUND INPUT LEADS
INPUT
TERMINALS
L
H
+
-
TB1
TB2
(INPUT IS NOT ISOLATED)
FRONT